Apparatus for vaporizing liquids



Apnl 1927' A. SCHNEIDER 24014 APPARATUS FOR VAPORIZING LIQUIDS Filed April 8, 1925. 2 Sheets-Sheet l /n van for I I. ,0 Apr A. SCHNEIDER APPARATUS FOR VAPORIZING LIQUIDS md April 8, 1925 2 Shoots-Sheet 2 Pi Patented Apr. 12, 1927.

UNITED STATES 1,624,014- PATENT OFFICE.

ADOLF SCHNEIDER, OF KELHEIM-ON-THE-DANUBE, GERMANY, ASSIGNOR TO NIE- DERBAYERISCHE CELLULOSEWERKE, OF KELHEIM-ON-THE-DANUBE, GERMANY, A

CORPORATION OF GERMANY.

APPARATUS FOR VAPORIZING LIQUIDS.

Application filed April 8, 1925, Serial No.

'My invention relates to improvements in the method of and apparatus forvaporizing liquids, and more particularly apparatus in which the liquid to be vaporized is passed to the closed bottom of a tubular receptacle through a feeding-pipe disposed within said receptacle, the receptacle being heated by suitable means. One of the objects of'the improvements is to provide an apparatus of this type in which the flow of the liquid through the feeding-pipe is controlled by suitable controlling means, which means also have the function to prevent baekstreaming of the liquid within the feeding-pipe. With r this object in view I provide throttling means within the said feeding-pipe and preferably at the delivery end thereof, which throttling means are in the form of a check valve or the like permitting the flow of the liquid from the pipe into the receptacle and adapted to be nearly or entirely closed by blows of pressure from the said vaporizing chamber. In some cases the same result is obtained by providing the pipe with a comparatively small delivery passage, said passage permitting the continuous flow of the liquid from the said feeding-pipe into the vaporizing chamber, but preventing the transmission of the pressure from the vaporizing chamber to the feeding pipe.

Other objects of the improvements will appear from the following description. I

For the purpose of explaining the invention several examples embodying the same have been shown in the accompanying drawings, in which- Fig. 1 is a sectional elevation of a vaporizing apparatus'forming a part of a steam boiler,

Figs. 2 and 3 are partial sectional views showmg a modification,

Fig. 4 is a partial sectional elevation showing a set of-vaporizing apparatus in connection with a steam boiler, and

Fig. 5 is a sectional elevation taken on the line 4-4 of Fig. 4.

The example shown in Fig. 1 is understood to be an element of a steam boiler having a flue or heating chamber h. Above the top wall of the said flue there is an upper-boiler (it provided with a dome m formed with a tubular stud m for the delivery of the steam from the upper-boiler a, and the dome comprises a sieve a. To the bottom 21,5995. and in Germany April 11, 1924.

secured to the tube 7) and the feeding-pipe c. 7

Near itstop end the feeding-pipe 0 is provided with passages i, and below the said passages a bafile k is secured to the feedingpipe e, which baffle is bent downwardly at its margin so as to provide wlth the bead e an annular delivery passage directed downwardly and towards the water chamber of the upper-boiler a. In Fig. 2 is shown, that the delivery passage also may be. directed towards the feeding-pipe a, while according to Fig. 3, it is directed both towards the water chamber of the upper boiler and towards the feeding-pipe a. As appears from. Fig. lthe top end of the annular member 6 is disposed above the level of the water confined within the upper-boiler a. At its bottom end the feeding-pipe c is provided with suitable throttling means. In the example shown in Fig. 1 the said throttling means are provided by a hole d made in the bottom of the feeding-pipe c and a check valve (1 located at the bottom side of the passage J.

The operation of the apparatus shown in Fig. 1 is as follows: The water from the upper-boiler a flows through the tubular members 9 into the feeding-pipe c and downwardly therein through the passage d, from whence it is delivered into the chamber k From the chamber k the water rises through the annular passage 5, and it is partly vaporized by the heat applied to the outer wall of the tube 6. The mixture of water and steam is delivered through the annular passage provided between the bead e and the battle 7:, the water falling downwardly and the steam rising through the sieve n and the delivery stud m. It appears therefore that the water flowing from the upper-boiler a into the pipe 0 and downwardly and the mixture of steam and water rising within the passage h have independent paths. I

have found that it is important to have independent paths for the water moving downwardly and the mixture of water and steam moving upwardly. If the pressure within the annular assage h issuddenly increased the valve (1 1s seated, so that the said pressure is not transmitted to the water confined within the feeding-pipe 0. The efore the surface of the water is not stirred in an objectionable way, and the operation of the apparatus is noiseless.

In some cases the passage is in the form from the feeding-pipe c to the vaporizingchamber h of an ejector so that a suction is produced within the feeding-pipe c by the flow of the mixture of water and steam through the said passage.

When using the apparatus in 'a steam boiler the vaporization is very rapid. I have found that under normal conditions the vaporization per hour amounts to 100 kilogrammes of water. It may be increased to many hundred kilogrammes per hour a square meter.

In Figs. 4 and 5 I have shown the manner of using the vaporizing apparatus in combination with a steam boiler. In the said figures I have shown the rear part of a locomotive boiler at having fire tubes Z. To the .upper part of the fire box sheet of the said boiler tubular portions 8 are secured which are connected with a transverse pipe 8 To the transverse pipe 8 several pipes a are secured, which are disposed longitudinally to the steam boiler, and each of which corresponds to the upper-boiler a shown in Fig.

1. Each of the pipes a is provided with a plurality of tubes 5 and feeding-pipes a constructed in the manner shown in Fig. 1. Instead of the delivery stud m shown in Fig. 1 pipes s and. s are connected to the top part of the pipe 3 and to the dome s of the steam boiler.

As appears from Figs. 4 and 5 the pipe 8 is connected to the boiler so that the steam chamber of the pipes a communicates with the steam chamber of the boiler, and that the low water level is above the pipes g.

I claim:-

1. An apparatus for vaporizing liquids, comprising a tubular receptacle having a closed bottom, a. feeding pipe Within said receptacle and extending to a point near the bottom of said receptacle, means to supply liquid to said feeding pipe, a check-valve positioned to prevent backstreaming of liquid within the said feeding pipe, and means for heating said receptacle.

2. An apparatus for vaporizing liquids, comprising a tubular receptacle having a closed bottom, a feeding pipe within said receptacle and extending to a point near the bottom of said receptacle, means to sup ly liquid to said feeding pipe, a freely mova le check-valve positioned to prevent backstreaming of liquid within the said feeding pipe, and means for heating said receptacle.

In testimony whereof, I have si ned my name to this specification at Kel eim-onthe-Danube, Germany, this 27th day of March, 1925.

DR. ADOLF SCHNEIDER. 

